'use strict';
const db = uniCloud.database()
const dbCmd = db.command
exports.main = async (event, context) => {

	const {user_id,article_id} = event;
	
	const user = await db.collection('user').doc(user_id).get()
	const thumbs_up_article_ids = user.data[0].thumbs_up_article_ids
	let thumbs_ids = null
	
	if (thumbs_up_article_ids.includes(article_id)) {
		return {
			code : 200,
			msg : '您已经点过赞了',
		}
	} else {
		thumbs_ids = dbCmd.addToSet(article_id)
	}
	
	await db.collection('user').doc(user_id).update({
		thumbs_up_article_ids:thumbs_ids
	})
	
	await db.collection('article').doc(article_id).update({
		thumbs_up_count:dbCmd.inc(1)
	})
	
	//返回数据给客户端
	return {
		code:200,
		msg : '点赞成功',
	}
};
